2025 Calendar | Ocean Mermaid | A4

We’re a little in love with this illustrated blue mermaid art calendar - with striking cobalt blue illustrations on each page of the 2025, A4 sized wall calendar - inspired by the ocean, beach and mermaids, in bright cobalt blue.

Each monthly page features a dated grid from Monday to Sunday, with plenty of space to write down your appointments and events.

A 2025 Wall calendar with UK & US bank holidays, notable dates, week numbers and moon phases.

Its compact A4 size fits nicely above your desk or on your kitchen wall.

Optional: add a pack of Corner Stickers to level up your planning in 2025.

As always, designed and printed in the UK on 100% recycled paper.

The design matches the popular Ocean Mermaid Wild Swimming Journal.

Product Details:

• A4: 21 × 29.7 cm // 8.3 × 11.7 inches
• Box Size: 2.9 x 3.4 cm // 1.14 x 1.34 inches
• 160gsm matte paper (easy to write on and doesn’t bleed), with 300gsm covers
• 12 Months: January - December 2025
• Week Starts Monday
• Ring-bound with a hand to hang on a hook
• 100% recycled and recyclable paper
• Posted in Plastic-free packaging
• Includes week numbers, UK & US holidays, and moon phases (Northern Hemisphere)

UNITED KINGDOM

• Royal Mail Tracked 48® - Free on all UK orders over £10.00
• Royal Mail Tracked 48® - £1.99 on all UK orders under £10.00
• Royal Mail Tracked 24® - £3.50 express UK delivery
• DPD Next Day Local Collect - £3.75 next day UK delivery (choose preferred pick up location at checkout)
• DPD Next Day Delivery (Monday to Friday)* - £4.65 next day UK delivery 
• DPD Next Day Delivery (Saturday)* - £8.95 next day Saturday UK delivery

* Next Day Available If Ordered By 2pm

EUROPE

• Royal Mail International Standard - £5.00 Untracked
• Royal Mail International Standard - £11.00 TRACKED
  
  Royal Mail aims to deliver in 3-5 working days. Although this may be longer. 
  (please note, some countries will charge extra fees when importing. For example, orders to NL over EU22 - will have a customs clearance fee)
  

REST OF THE WORLD

• Royal Mail International Standard - £8.00 Untracked
• Royal Mail International Standard - £15.00 TRACKED
  
  Royal Mail aims to deliver in 6-10 working days. Although this may be longer. 
  (please note, some countries will charge extra fees when importing. For example, orders to NL over EU22 - will have a customs clearance fee)
  

DELIVERIES
For orders placed before 2pm on a working day, we aim to get your order out on the same day. Orders after 2pm will be shipped on the next working day.
We don’t ship on UK bank holidays as our postal service doesn’t run.
See all bank holidays here.

Your parcel will arrive plastic-free with minimal packaging and inserts. We run a plastic-free warehouse.

Here’s a few more ways we work towards sustainability goals:

• All products are made in the U.K.
• Printed on 100% Recycled Paper, always
• All Deliveries are Carbon offset through Shopify Planet

Once Upon a Tuesday is UK’s first Certified B Corporation Stationery Brand - using business as a force for good.